US4270832A - Pin plug - Google Patents
Pin plug Download PDFInfo
- Publication number
- US4270832A US4270832A US06/033,315 US3331579A US4270832A US 4270832 A US4270832 A US 4270832A US 3331579 A US3331579 A US 3331579A US 4270832 A US4270832 A US 4270832A
- Authority
- US
- United States
- Prior art keywords
- electrode
- pin plug
- lead wire
- base
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 230000008878 coupling Effects 0.000 claims abstract 2
- 238000010168 coupling process Methods 0.000 claims abstract 2
- 238000005859 coupling reaction Methods 0.000 claims abstract 2
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- 230000002950 deficient Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
- H01R24/38—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts
- H01R24/40—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency
- H01R24/56—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure having concentrically or coaxially arranged contacts specially adapted for high frequency specially adapted to a specific shape of cables, e.g. corrugated cables, twisted pair cables, cables with two screens or hollow cables
- H01R24/568—Twisted pair cables
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/58—Means for relieving strain on wire connection, e.g. cord grip, for avoiding loosening of connections between wires and terminals within a coupling device terminating a cable
Definitions
- This invention relates to a pin plug and more particularly to a connector for tightly connecting a connecting cord to a pin plug.
- a problem of the prior pin plug heretofore used in the audio equipment for example is that a connection between the plug and the connecting cord is unstable and the latter is apt to disengage from the former or to cause a defective contact because the plug is usually disengaged from a jack by pulling the connecting cord.
- the inventor provides in accordance with the invention a pin plug in which the connecting cord is tightly fixed to a plug terminal without causing any deficiencies such as disengagement of the connecting cord from the electrode or defective contact therewith.
- the pin plug comprises a bar electrode, a base body for holding said bar electrode, a cap electrode coaxially and insulatedly encircling said bar electrode and a flexible sleeve for coating said base body wherein the base body is provided in its circumference with continuous axial and radial grooves for receiving a connecting cord to be connected to either the bar electrode or the cap electrode.
- FIG. 1 is an exploded perspective view of the pin plug in accordance with the present invention
- FIG. 2 is a front elevation of the plug body
- FIG. 3 is a longitudinally sectioned view of the plug body of FIG. 2 with a sleeve and a connecting cord;
- FIG. 4 is a longitudinally sectioned view taken along the line 4--4 of FIG. 2 with the sleeve and the connecting cord.
- FIG. 1 a pin plug in accordance with the instant invention is shown at A in FIG. 1.
- the pin plug body A is generally comprised of a rod electrode 10 and a cylindrical cap electrode 12 encircling coaxially the rod electrode 10 and a base body 14 for supporting the rod electrode 10 and the cap electrode 12.
- the base body 14 is composed of insulating material and includes a body section 16 and a head section 18 connected therewith through a stem 20 and through the head section 18 is passed the rod electrode 10 whereas the cap electrode 12 is mounted around the head section 18 with projections 22 and thus electrically insulated from the rod electrode 10.
- a recess 24 In the circumference of the head section 18 is provided a recess 24 in which a terminal end portion of the cap electrode 12 is connected with a lead wire 26a of a connecting cord 26.
- a window 28 to expose a part of the rod electrode 10 passing through the stem 20 for connection with a lead wire 26b of the connecting cord 26.
- an axial groove 32a In the circumference of the body section 16, there are provided in continuation an axial groove 32a, a radial groove 32b, an axial groove 32c and a radial groove 32d to form a single continuous groove of substantially Z-shape in which the connecting cord 26 is tightly received in rigid contact with the corners of the Z-groove 34 as hereinafter fully described.
- the lead wire 26a is connected to the terminal of the cap electrode 12 through a channel 36 provided in an end of the body section 16 in continuation with the radial groove 32d.
- the lead wire 26b is connected through an aperture 38 provided in the end portion of the body section 16 in parallel with the radial groove 32d and a short groove 40 in communication with the aperture 38 to the rod electrode 10 exposed through the window 28.
- the lead wires 26a and 26b are preferably connected to the electrodes 10 and 12 at symmetrical positions across the bar electrode 10 to avoid undesired occurance of short circuit.
- the rod electrode 10 and the cap electrode 12 are previously placed in a convenient metal mold and then the metal mold is filled with an insulating material such as plastics to form the base body 14 and finally the connecting cord 26 is guided through the Z-shape groove 34 in tight contact with each corner of the Z-groove 34.
- the reference numeral 42 stands for a flexible sleeve which is generally made of insulating soft plastics or rubbers and adapted to coat the base body 14 with the cap electrode 12.
- annular ridge 44 which falls in a space formed between the head section 18 and the body section 16. It will be appreciated that the sleeve 42 is constituted removable from the base body 14 for convenient checking of accident to be caused and repair thereof.
- the molding is performed at more reduced time without entailing any likelihood of melting the connecting cord 26 due to an avoidance of elevated temperature under an extended molding operation.
- the radial groove 32d is provided in normal to the length of the pin plug and passing through the base body. Accordingly, the connecting cord 26 is tightly received in the groove 34 in a zig-zag form on account of the presence of the radial grooves, so that any separation or disengagement of the connecting cord 26 may be perfectly prevented, because a tension generated when the connecting cord 26 is drawn is absorbed in the corners of the Z-groove and can not reach at the connecting part of the electrode with the connecting cord.
- the pin plug according to the invention has an improved durability even with a simple structure which is convenient for mass production.
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Coupling Device And Connection With Printed Circuit (AREA)
Abstract
There is disclosed a pin plug comprising a rod electrode and a cylindrical cap electrode encircling coaxially the rod electrode and a base body for supporting the rod electrode and the cap electrode. The base body includes a head section for supporting the bar electrode and a body section providing continuous axial and radial grooves for receiving the connecting cord with an annular space formed therebetween and with a stem portion coupling the head section with the body section.
Description
This invention relates to a pin plug and more particularly to a connector for tightly connecting a connecting cord to a pin plug.
Various types of the pin plug have heretofore been commercially available and example of such the pin plug may be found in the Japanese utility model publications Nos. 45-16025, 51-41192, 53-50071 and 53-50070.
A problem of the prior pin plug heretofore used in the audio equipment for example is that a connection between the plug and the connecting cord is unstable and the latter is apt to disengage from the former or to cause a defective contact because the plug is usually disengaged from a jack by pulling the connecting cord.
With the foregoing in mind the inventor provides in accordance with the invention a pin plug in which the connecting cord is tightly fixed to a plug terminal without causing any deficiencies such as disengagement of the connecting cord from the electrode or defective contact therewith.
In the form of the invention herein disclosed the pin plug comprises a bar electrode, a base body for holding said bar electrode, a cap electrode coaxially and insulatedly encircling said bar electrode and a flexible sleeve for coating said base body wherein the base body is provided in its circumference with continuous axial and radial grooves for receiving a connecting cord to be connected to either the bar electrode or the cap electrode.
Objects and attendant advantages of the invention will be apparent from the following disclosure taken in conjunction with the accompanying drawing wherein:
FIG. 1 is an exploded perspective view of the pin plug in accordance with the present invention;
FIG. 2 is a front elevation of the plug body;
FIG. 3 is a longitudinally sectioned view of the plug body of FIG. 2 with a sleeve and a connecting cord; and
FIG. 4 is a longitudinally sectioned view taken along the line 4--4 of FIG. 2 with the sleeve and the connecting cord.
Referring now to the drawing wherein like reference character refer to like part a pin plug in accordance with the instant invention is shown at A in FIG. 1.
The pin plug body A is generally comprised of a rod electrode 10 and a cylindrical cap electrode 12 encircling coaxially the rod electrode 10 and a base body 14 for supporting the rod electrode 10 and the cap electrode 12.
The base body 14 is composed of insulating material and includes a body section 16 and a head section 18 connected therewith through a stem 20 and through the head section 18 is passed the rod electrode 10 whereas the cap electrode 12 is mounted around the head section 18 with projections 22 and thus electrically insulated from the rod electrode 10. In the circumference of the head section 18 is provided a recess 24 in which a terminal end portion of the cap electrode 12 is connected with a lead wire 26a of a connecting cord 26.
In the circumference of the stem 20 is formed a window 28 to expose a part of the rod electrode 10 passing through the stem 20 for connection with a lead wire 26b of the connecting cord 26.
In the circumference of the body section 16, there are provided in continuation an axial groove 32a, a radial groove 32b, an axial groove 32c and a radial groove 32d to form a single continuous groove of substantially Z-shape in which the connecting cord 26 is tightly received in rigid contact with the corners of the Z-groove 34 as hereinafter fully described. The lead wire 26a is connected to the terminal of the cap electrode 12 through a channel 36 provided in an end of the body section 16 in continuation with the radial groove 32d. While, the lead wire 26b is connected through an aperture 38 provided in the end portion of the body section 16 in parallel with the radial groove 32d and a short groove 40 in communication with the aperture 38 to the rod electrode 10 exposed through the window 28.
The lead wires 26a and 26b are preferably connected to the electrodes 10 and 12 at symmetrical positions across the bar electrode 10 to avoid undesired occurance of short circuit.
In assembly of the attachment plug according to the invention, the rod electrode 10 and the cap electrode 12 are previously placed in a convenient metal mold and then the metal mold is filled with an insulating material such as plastics to form the base body 14 and finally the connecting cord 26 is guided through the Z-shape groove 34 in tight contact with each corner of the Z-groove 34.
The reference numeral 42 stands for a flexible sleeve which is generally made of insulating soft plastics or rubbers and adapted to coat the base body 14 with the cap electrode 12.
In inner circumferential wall of the sleeve 42 there is provided an annular ridge 44 which falls in a space formed between the head section 18 and the body section 16. It will be appreciated that the sleeve 42 is constituted removable from the base body 14 for convenient checking of accident to be caused and repair thereof.
Further, as compared with the conventional structure here even when the connecting cord and the electrodes 10 and 12 are molded together, the molding is performed at more reduced time without entailing any likelihood of melting the connecting cord 26 due to an avoidance of elevated temperature under an extended molding operation.
As hereinbefore described, the radial groove 32d is provided in normal to the length of the pin plug and passing through the base body. Accordingly, the connecting cord 26 is tightly received in the groove 34 in a zig-zag form on account of the presence of the radial grooves, so that any separation or disengagement of the connecting cord 26 may be perfectly prevented, because a tension generated when the connecting cord 26 is drawn is absorbed in the corners of the Z-groove and can not reach at the connecting part of the electrode with the connecting cord.
As hereinbefore fully described, the pin plug according to the invention has an improved durability even with a simple structure which is convenient for mass production.
Without further elaboration, the foregoing will so fully illustrate my invention that others may, by applying the current or future knowledge, readily adapt the same for use under various conditions of service.
Claims (5)
1. A pin plug for attachment to the lead wire of a connecting cord comprising a bar electrode and a cap electrode and a base for holding said bar electrode and said cap electrode coaxially and insulatedly from each other and a flexible sleeve for coating said base, said base including a head section for supporting said cap and bar electrodes and a body section provided in its circumference with at least one continuous groove for receiving the lead wires of a connecting cord, said continuous groove comprising at least three tandemly arranged groove portions, at least one of said groove portions extending axially and one of said groove portions extending radially of said base, said axial and radial groove portions alternating with each other, said base being formed with an annular space between said head and body sections for connection of one of said lead wires to said cap electrode and a stem portion coupling said head and body sections, and through which said bar electrode extends for connection of the other lead wire and at least one hole in communication with the last radial groove for passing the lead wire to said stem portion to be connected to the bar electrode.
2. A pin plug as claimed in claim 1, wherein the stem portion is provided with a window to expose the bar electrode for connection with the lead wire derived from the connecting cord.
3. A pin plug as claimed in claim 1, wherein the cap electrode is provided with a recess for receiving a terminal end of the lead wire to be connected therewith.
4. A pin plug as claimed in claim 1, wherein the flexible sleeve is provided in its circumferential wall with an annular ridge which is adapted to be received in the annular space formed between the head section and the body section.
5. A pin plug as claimed in claim 1, wherein the marginal edge portion of the base body is provided with a recess in communication with the last radial groove for receiving another lead wire to be connected to the cap electrode.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53/145688[U] | 1978-10-23 | ||
JP1978145688U JPS6210951Y2 (en) | 1978-10-23 | 1978-10-23 |
Publications (1)
Publication Number | Publication Date |
---|---|
US4270832A true US4270832A (en) | 1981-06-02 |
Family
ID=15390785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US06/033,315 Expired - Lifetime US4270832A (en) | 1978-10-23 | 1979-04-25 | Pin plug |
Country Status (2)
Country | Link |
---|---|
US (1) | US4270832A (en) |
JP (1) | JPS6210951Y2 (en) |
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0105723A1 (en) * | 1982-10-06 | 1984-04-18 | AMP INCORPORATED (a New Jersey corporation) | A connector for shielded cable |
US4444449A (en) * | 1981-03-16 | 1984-04-24 | Minnesota Mining And Manufacturing Company | Electrical connector |
US4545636A (en) * | 1984-02-29 | 1985-10-08 | At&T Technologies, Inc. | Methods of and assemblies for strain relieving connectorized flat cable |
US4664464A (en) * | 1985-04-09 | 1987-05-12 | Allied Corporation | Coaxial cable termination |
FR2676869A1 (en) * | 1991-05-22 | 1992-11-27 | Smiths Industries Plc | FITTING FOR A SHEATHABLE CABLE BY A BRAID. |
US5205297A (en) * | 1988-03-25 | 1993-04-27 | Lectec Corporation | Multipurpose medical stimulation electrode |
US5330527A (en) * | 1988-03-25 | 1994-07-19 | Lec Tec Corporation | Multipurpose medical electrode |
US5522878A (en) * | 1988-03-25 | 1996-06-04 | Lectec Corporation | Solid multipurpose ultrasonic biomedical couplant gel in sheet form and method |
USD388054S (en) * | 1996-01-12 | 1997-12-23 | DEFA Group, A.S. | Plug for apparatus intake |
US5727550A (en) * | 1996-04-09 | 1998-03-17 | Lectec Corporation | Dual purpose ultrasonic biomedical couplant pad and electrode |
US6346008B1 (en) * | 2001-01-11 | 2002-02-12 | Jed Hacker | Phono-type plug with an insulating element having a strain relief extension for supporting a wire |
US20080248688A1 (en) * | 2007-04-03 | 2008-10-09 | John Mezzalingua Associates, Inc. | Sure-grip rca-type connector and method of use thereof |
US20150008034A1 (en) * | 2013-07-03 | 2015-01-08 | Bo-Jiang Technology Co., Ltd. | Cable assembly and signal transmission system thereof |
US9590351B2 (en) * | 2015-02-19 | 2017-03-07 | Kidde Technologies Inc. | Cable strain relief |
US10637176B1 (en) * | 2019-03-14 | 2020-04-28 | Aptiv Technologies Limited | Connector assembly with retainer |
USD928711S1 (en) * | 2019-07-31 | 2021-08-24 | Ledlenser GmbH & Co. KG | Contact plug |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5821506Y2 (en) * | 1980-10-31 | 1983-05-07 | 株式会社 林製作所 | Packing to prevent disconnection at the wire connection part of a rod-shaped vibrator |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE571910C (en) * | 1933-03-07 | Johann Valerius | Connector provided with forced strain relief of the connection cable | |
FR780331A (en) * | 1933-09-18 | 1935-04-23 | Lamp holder for light bulbs | |
US2050440A (en) * | 1935-06-03 | 1936-08-11 | William J Mcfadden | Electrical connecter |
GB858097A (en) * | 1958-02-12 | 1961-01-04 | J F J Products Ltd | Electric plug or socket |
US3031637A (en) * | 1958-04-01 | 1962-04-24 | Electrolux Ab | Electrical coupling device |
GB904827A (en) * | 1958-12-19 | 1962-08-29 | Atomic Energy Authority Uk | Electrical connector |
GB1350087A (en) * | 1971-04-15 | 1974-04-18 | Radiall Sa | Gripping devices for gripping on a coaxial connector a single lead instead of a peripheral lead |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS49138394U (en) * | 1973-03-30 | 1974-11-28 | ||
JPH0740415Y2 (en) * | 1988-06-24 | 1995-09-20 | 株式会社クボタ | Vehicle diff lock device |
-
1978
- 1978-10-23 JP JP1978145688U patent/JPS6210951Y2/ja not_active Expired
-
1979
- 1979-04-25 US US06/033,315 patent/US4270832A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE571910C (en) * | 1933-03-07 | Johann Valerius | Connector provided with forced strain relief of the connection cable | |
FR780331A (en) * | 1933-09-18 | 1935-04-23 | Lamp holder for light bulbs | |
US2050440A (en) * | 1935-06-03 | 1936-08-11 | William J Mcfadden | Electrical connecter |
GB858097A (en) * | 1958-02-12 | 1961-01-04 | J F J Products Ltd | Electric plug or socket |
US3031637A (en) * | 1958-04-01 | 1962-04-24 | Electrolux Ab | Electrical coupling device |
GB904827A (en) * | 1958-12-19 | 1962-08-29 | Atomic Energy Authority Uk | Electrical connector |
GB1350087A (en) * | 1971-04-15 | 1974-04-18 | Radiall Sa | Gripping devices for gripping on a coaxial connector a single lead instead of a peripheral lead |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4444449A (en) * | 1981-03-16 | 1984-04-24 | Minnesota Mining And Manufacturing Company | Electrical connector |
EP0105723A1 (en) * | 1982-10-06 | 1984-04-18 | AMP INCORPORATED (a New Jersey corporation) | A connector for shielded cable |
US4477132A (en) * | 1982-10-06 | 1984-10-16 | Amp Incorporated | Connector for twin axial cable |
US4545636A (en) * | 1984-02-29 | 1985-10-08 | At&T Technologies, Inc. | Methods of and assemblies for strain relieving connectorized flat cable |
US4664464A (en) * | 1985-04-09 | 1987-05-12 | Allied Corporation | Coaxial cable termination |
US5522878A (en) * | 1988-03-25 | 1996-06-04 | Lectec Corporation | Solid multipurpose ultrasonic biomedical couplant gel in sheet form and method |
US5205297A (en) * | 1988-03-25 | 1993-04-27 | Lectec Corporation | Multipurpose medical stimulation electrode |
US5330527A (en) * | 1988-03-25 | 1994-07-19 | Lec Tec Corporation | Multipurpose medical electrode |
FR2676869A1 (en) * | 1991-05-22 | 1992-11-27 | Smiths Industries Plc | FITTING FOR A SHEATHABLE CABLE BY A BRAID. |
USD388054S (en) * | 1996-01-12 | 1997-12-23 | DEFA Group, A.S. | Plug for apparatus intake |
US5727550A (en) * | 1996-04-09 | 1998-03-17 | Lectec Corporation | Dual purpose ultrasonic biomedical couplant pad and electrode |
US6346008B1 (en) * | 2001-01-11 | 2002-02-12 | Jed Hacker | Phono-type plug with an insulating element having a strain relief extension for supporting a wire |
US20080248688A1 (en) * | 2007-04-03 | 2008-10-09 | John Mezzalingua Associates, Inc. | Sure-grip rca-type connector and method of use thereof |
US7462068B2 (en) | 2007-04-03 | 2008-12-09 | John Mezzalingua Associates, Inc. | Sure-grip RCA-type connector and method of use thereof |
US20150008034A1 (en) * | 2013-07-03 | 2015-01-08 | Bo-Jiang Technology Co., Ltd. | Cable assembly and signal transmission system thereof |
US9287927B2 (en) * | 2013-07-03 | 2016-03-15 | Infinet Technology Ltd. | Cable assembly and signal transmission system using the same |
US9590351B2 (en) * | 2015-02-19 | 2017-03-07 | Kidde Technologies Inc. | Cable strain relief |
US10637176B1 (en) * | 2019-03-14 | 2020-04-28 | Aptiv Technologies Limited | Connector assembly with retainer |
USD928711S1 (en) * | 2019-07-31 | 2021-08-24 | Ledlenser GmbH & Co. KG | Contact plug |
Also Published As
Publication number | Publication date |
---|---|
JPS5561986U (en) | 1980-04-26 |
JPS6210951Y2 (en) | 1987-03-14 |
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Legal Events
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STCF | Information on status: patent grant |
Free format text: PATENTED CASE |